Apparatus for the manufacture of sulfuric anhydrid.



No. 688,472. l Patented nec. lo, 19m.

n. muscu. l APPARATUS FORfTHE MANUFAGTURE 0F SULFURIC ANHYDBID.

(Application med Nov. 28, 1899.)

2 Sheets-Sheet l.

(No Model.)

INVENToR /%M ATTORNEYS l l i iw Jaw/M n WITNESSES:

Patented Dec. io, |901.

2Sheets-SI1eet 2.

INVENTOR ATTORNEY .f

Nu. y638,472.

y n. KNIETsc. APPARATUS FR THE MANUFCTURE 0F SULFUBIC ANHYDRID.

(Application led Nov. 23, 1899.)

(Np Model.)

WITNESSES me Nonms Pneqs 0o..v M01-ammo., WASHINGTON. n. c.4

Url

UNITED ASTATES PATENT OFFICE.

RUDOLF KNIETSCH, OF LUDWIGSHAFEN, GERMANY, ASSIGNOR TO THE BADISOHE ANILIN- t SODA-FABRIK, OF LUDWIGSHAFEN, GERMANY,

Av CORPORATION OF GERMANY.

APPARATUS FOR THE MANUFACTURE OF SULF.URIC ANHYDRID.

SPECIFICATION forming part of Lett-ers Patent No. 688,472, dated December 10, 1901.

Original application led July 14, 1898, Serial No. 685,969.

Divided and this application filed November 23, 1899. Serial No. 738,008. (No model.)

To a/ZZ whom it may, concern: 4.

Be it known that AI, RUDOLF KNIETSCH, doctor of philosophy, a subject of the King of Prussia, German Emperor, residing at Ludwigshafen-on-the-Rhine, in the Kingdom of Bavaria and Empire of Germany, have invented new and useful Improvements in Apparatus for the Manufacture of SulfuricvAnhydrid, of which the following is a specification.'

In my application, Serial No. 685,969, of July 14, 1898, I have described the apparatus which is the subject of Vthis application and have included it within the generic claims,

and I have filed this as a division of said ap-` plication for the purpose of securing specic claims for said apparatus. v

The form of apparatus here particularly described and claimed is'specially adapted for operating with a gas rich in sulfur dioxid.

In the accompanyingv drawings, Figure 1 represents a vertical section of a single contact-chamber,which is represented by the pipe or tube R. Fig. 2 is avertical section of apparatus containing a plurality of such contact-chambers represented by the tubes or pipes R and also suitable means for Vthoroughly mixing the gas to be treated, equalizing its temperature, and distributing it through the apparatus.

Referring first to Fig. 1, M represents brickwork g R, the contact-chamber, containing the contact substance, as 'indicated' by broken section-lines. The vcontact-chamber R is su rrounded by the annular space S, which is formed vby the wall S2, which may be of sheetiron. About this is the annular space S', inclosed between the wall S2 and the brickwork M. W and W' represent the tube-plates, situated, respectively, at the top and bottom of the contact-chamber and into which the ends of the contact-chamber are inserted. L is an opening allowing of the ventilation of the annular space S'. Within and at the bottom of the passage S", h represents a source of heat which is easily and quickly regulated-for instance, gas-lames. The gas to be treated enters at O and is led through F3 to the hottest partP of the contact substance in R. In this way the entering gas energetically cools this reaction zone and keeps it below the decomposition-point of the sulfuric anhydrid being formed. The coolinggas-currentcan leave the passage S through AG or A2, or through both, and then through the cooler H2 to I),or through .O2 and H2 to D, or through O2 to D, depending uponwhether the gas leaving A6 or A7, or both, has the proper temperature for the favorable operation of the apparatus or not. Also, depending upon the temperature of the gases entering D by way of O2 or H2, or both, part of the gas to be treated may enterD directlythrough F2. All this regulation can be eectedA by the valves V9 V10 V11 V12 V13 'V14 V15.

a plurality of tubes R and of bafIie-plates C in the passage S; also, in a circumferential by thegas from F3 is distributed in the passage S; also, the circumferential passages A8 and A9 and transverse passages B2 and B3, whereby the gas entering the passage at A8 and A9 is taken from the passage Sk at various points. There is in addition the mixer N in the cover, whose function is to thoroughly mix the gas, and thus equalize the temperature of the mass in the cover D before it entersthe contact-'chambers R. The gas containing tbe sulfuric anhydrid leaves the apparatus by 'way of the chamber Dl and opening O.

I claim- 1. In an apparatus for the manufacture of combination with the contact material, a receptacle for the same containing ingress and egress openings, an inclosure forming a cooling-medium passage adjacent to said receptacle and provided with ingress and egress openings arranged directly with respect to the ingress and egress openings of said receptacle, whereby the current of coolingl medium ilows in the same direction as the gases which pass through said contact material.

2. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in combination with the contact material, a receptacle for the same containing ingress and Fig. 2 differs from Fig. l in the addition of` assafre F4 and a transverse assave F5 wheresulfuric anhydrid by the contact process, in

egress openings, an inclosure forming a cooling-medium passage adjacent to said receptacle and provided with ingress and egress openings; the said cooling-medium ingressopening being arranged approximately opposite the ingress end of said contact material whereby the said cooling medium at its initial temperature is caused to impinge against the contact-material receptacle at substantially its zone of highest temperature.

3. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in combination with the contact material, a receptacle for the same containing ingress and egress openings, an inclosure forming a cooling-medium passage adjacent to said receptacle and communicating with said ingressopening, a conduit whereby said passage is supplied with gas containing sulfur dioxid and oxygen, a regulator for the temperature of the gas on its way from said cooling-rnedium passage to the contact material, means for regulating the rate of flow and direction of the gas to he operated upon and means h for heating the apparatus.

4. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in combination with the contact material, a receptacle for thesame containing ingress and egress openings, an inclosure forming a passage adjacent to said receptacle, a conduit whereby said passage is supplied with gas.

containing sulfur dioxid and oxygen, valved conduits A( and A7 whereby said gas is removed at different points from said passage and a conduit whereby said conduits A6 and A7 communicate with said ingress-opening.

5. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in

combination with the contact material, a receptacle for the same containing ingress and egress openings, an inclosure forming a cooling-medium passage adjacent to said receptacle and provided with an opening for the ingress of said cooling medium and a plurality of openings for the egress thereof.

6. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in combination with the Contact material, a receptacle for the same containing ingress and egress openings, an inclosure forming a cooling-medium passage adjacent to said receptacle, a conduit whereby said passage is supplied with gas containing sulfur dioXid and oxygen, a conduit whereby said gas is conducted from said passage to said in gross-Opening, a heater II2 for the same and a by-pass conduit O2 around said heater.

7. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in combination with the contact material, a receptacle for the same containing ingress and egress openings, an inclosnre forming a cooling-medium passage adjacent to said receptacle, a conduit supplying gas containing sulfur dioxid and oxygen, -two valved conduit-s F2 and 'F3 whereby said supply-conduit is connected respectively with said ingress-openin g and said cooling-medium passage and a valved conduit whereby said cooling-medium passage is connected with said ingress-openin".

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

RUDOLF KNIETSCH. Witnesses:

ERNEST F. EHRHARDT, BERNHARD C. HEssE. 

